Waterproof aluminum alloy conductor flexible cable

Abstract

The utility model discloses a waterproof aluminum alloy conductor flexible cable, which comprises aluminum alloy inner conductors, insulating layers and a wrapping sleeve, a plurality of aluminum alloy inner conductors are arranged in the wrapping sleeve, the insulating layers are arranged on the outer sides of the aluminum alloy inner conductors, and shielding layers are arranged on the outer sides of the insulating layers; the outer side of the wrapping sleeve is coated with a water-blocking layer, and the outer side of the wrapping sleeve is uniformly wound with an expansion water-blocking tape. According to the utility model, the outer sheath sleeves the outer side of the expansion water-blocking tape, the outer sheath can be utilized to carry out preliminary protection on the aluminum alloy conductor flexible cable, the outer sheath is made of rubber, can generate certain deformation and has a certain compression resistance effect, and then the polyurethane anti-freezing sleeve is arranged on the outer side of the outer sheath in an environment-friendly manner, so that the service life of the aluminum alloy conductor flexible cable is prolonged. The oil resistance, the wear resistance and the cold resistance are excellent, temperature protection can be provided for the aluminum alloy flexible cable, and the anti-freezing effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, in particular to a water-blocking aluminum alloy conductor flexible cable. Background Art

[0002] With the rapid development of the power industry and the growing demand for power transmission, the performance requirements for cables are also increasing. Especially in the field of medium and high voltage power transmission, factors such as cable waterproof performance, electrical conductivity, mechanical strength and economic cost have become the focus of the industry. Against this background, water-blocking aluminum alloy conductor flexible cables have emerged and become an important choice in the field of power transmission.

[0003] A water-blocking aluminum alloy wind power cable with announcement number CN215731018U includes a twisted conductor and an outer water-blocking layer and a sheath wrapped around the twisted conductor in sequence. The outer water-blocking layer includes a semiconductor water-blocking tape layer, a water-blocking expansion tape layer, an anti-water treeing layer and a composite tape water-blocking layer arranged from the inside to the outside. The wind power cable conductor in the utility model is provided with a carbon fiber reinforced epoxy resin composite material conductor core inside, and the conductor is coated with an internal water-blocking structure formed by a water-blocking adhesive + water-blocking powder, which has excellent tensile strength, electrical conductivity and longitudinal water-blocking properties; the water-blocking layer is provided on the outside of the conductor, which can effectively improve the overall water-blocking performance and electrical insulation of the cable, so that it can adapt to humid environments and maintain the stability of the cable function. At the same time, the cable has good electrical conductivity, high temperature resistance, good tensile strength, and good moisture and salt spray resistance. It is a wind power cable suitable for humid climates.

[0004] The above-mentioned existing technology has certain defects when in use: it has a single function and lacks corresponding thermal insulation protection. In a low temperature environment, the outer layer of the cable is prone to hardening or cracking, which reduces the service life of the cable. In addition, in a low temperature environment, the resistance of the aluminum alloy flexible cable may increase, resulting in a decrease in conductivity, which in turn affects the cable's power transmission efficiency and increases energy consumption costs. Therefore, corresponding improvements are needed. Utility Model Content

[0005] The purpose of the utility model is to provide a water-blocking aluminum alloy conductor flexible cable to solve the problem of poor antifreeze effect of the aluminum alloy conductor flexible cable proposed in the above background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a water-blocking aluminum alloy conductor flexible cable, comprising an aluminum alloy inner conductor, an insulating layer, and a sheath, wherein a plurality of aluminum alloy inner conductors are disposed inside the sheath, and the outer sides of the aluminum alloy inner conductors are each provided with an insulating layer, and the outer sides of the insulating layer are each provided with a shielding layer;

[0007] Also includes:

[0008] The outer side of the wrapping sleeve is coated with a water-blocking layer, the outer side of the wrapping sleeve is evenly wrapped with an expansion water-blocking tape, and the outer side of the expansion water-blocking tape is sleeved with an outer protective sleeve, and the outer side of the outer protective sleeve is sleeved with a polyurethane antifreeze sleeve, and a connecting component is provided on one side of the polyurethane antifreeze sleeve, the connecting component includes a plug-in column arranged at one end of the polyurethane antifreeze sleeve, and a docking groove is provided at one end of the polyurethane antifreeze sleeve corresponding to the plug-in column, and the width of the plug-in column matches the width of the docking groove.

[0009] Preferably, the water-blocking layer is a polyethylene waterproof layer, and the outer sheath is made of rubber.

[0010] Preferably, a heat preservation groove is provided on the polyurethane antifreeze sleeve, and the interior of the heat preservation groove is filled with heat preservation cotton, and the interior of the heat preservation groove is evenly connected with a first support bar and a second support bar.

[0011] Preferably, a plurality of the first support bars and the second support bars are provided in the heat preservation tank, and the first support bars and the second support bars are interlaced and distributed.

[0012] Preferably, the heat-insulating groove and the first support bar form a mesh structure, and the heat-insulating groove and the first support bar cover the heat-insulating cotton.

[0013] Preferably, a telescopic cavity with a rectangular cross-section is provided at the top end of the plug-in column, and a compression spring is connected to the inside of the telescopic cavity, and one end of the compression spring is connected to a locking column.

[0014] Preferably, the locking column is telescopically connected to the telescopic cavity through a compression spring, one end of the locking column passes through the locking hole, and the locking hole is provided on the polyurethane antifreeze sleeve.

[0015] Compared with the prior art, the utility model has the following beneficial effects: the water-blocking aluminum alloy conductor flexible cable not only has good heat preservation and antifreeze effect, but also has good waterproof and water-blocking effect;

[0016] By sleeved on the outside of the expansion water-blocking tape, the outer sheath can be used to provide preliminary protection for the aluminum alloy conductor flexible cable. The outer sheath is made of rubber, which can produce a certain degree of deformation and has a certain pressure resistance. Then, a polyurethane antifreeze sleeve is environmentally friendly on the outside of the outer sheath. It has excellent oil resistance, wear resistance and cold resistance, and can provide temperature protection for the aluminum alloy flexible cable with good antifreeze effect.

[0017] Then, an insulation groove is set on the polyurethane antifreeze sleeve, and the insulation groove is filled with insulation cotton to further achieve the effect of insulation and antifreeze. The cooperation of multiple groups of first support bars and second support bars is used to provide internal support for the polyurethane antifreeze sleeve and provide shielding protection for the insulation cotton.

[0018] When the polyurethane antifreeze sleeve is sleeved on the outer sleeve, the plug-in column is inserted into the docking groove. During this process, the locking column is pressed and the compression spring is compressed. When the plug-in column is fully inserted, the compression spring is reset, and the locking column can be pushed through the locking hole to ensure that the plug-in column is firmly inserted into the docking groove, so as to ensure that the polyurethane antifreeze sleeve is firmly sleeved on the outer sleeve. The above reverse operation can be performed to realize the removal of the polyurethane antifreeze sleeve, which is convenient to use.

[0019] By applying a water-blocking layer on the outside of the sheath, which is a polyethylene waterproof layer, it has a good waterproof effect, and further wrapping an expandable water-blocking tape on the outside of the sheath so that the expandable water-blocking tape covers the sheath, forming a water-blocking structure on the periphery of the aluminum alloy flexible cable. When water enters, the expandable water-blocking tape expands rapidly due to moisture and fills the internal gap of the cable, preventing further diffusion of moisture, avoiding moisture flowing into the sheath and causing a short circuit on the aluminum alloy inner conductor, which helps to extend the service life of the point cable;

[0020] The main body of the aluminum alloy flexible cable can be formed by wrapping a sheath around the periphery of multiple groups of aluminum alloy inner conductors, and an insulating layer is coated on the outside of the multiple groups of aluminum alloy inner conductors to make the aluminum alloy inner conductors have better electrical insulation performance, and cooperate with the shielding layer to prevent electromagnetic interference signal transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0023] Figure 2 This is a schematic diagram of the cross-sectional three-dimensional structure of the antifreeze sleeve of the present utility model;

[0024] Figure 3 This is a schematic diagram of the three-dimensional structure of the expansion water-blocking tape of the utility model in a wound state;

[0025] Figure 4 It is a partial three-dimensional structural diagram of the plug-in column of the utility model when it is inserted into the docking slot.

[0026] Explanation of the reference numerals in the figure: 1. Aluminum alloy inner conductor; 2. Insulation layer; 3. Shielding layer; 4. Wrapping sleeve; 5. Water-blocking layer; 6. Expansion water-blocking tape; 7. Outer sheath; 8. Polyurethane antifreeze sleeve; 801. Insulation groove; 802. First support bar; 803. Second support bar; 804. Insulation cotton; 9. Docking groove; 10. Plug-in column; 1001. Telescopic cavity; 1002. Compression spring; 1003. Locking column; 11. Locking hole. DETAILED DESCRIPTION

[0027] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] See also Figure 1-Figure 4 , the utility model provides the following technical solutions:

[0029] Example 1

[0030] In order to solve the problem of poor waterproof effect of the existing water-blocking aluminum alloy conductor flexible cable during use, the following technical solution is published. For details, please refer to Figure 1 A water-blocking aluminum alloy conductor flexible cable comprises an aluminum alloy inner conductor 1, an insulating layer 2, and a sheath 4. A plurality of aluminum alloy inner conductors 1 are arranged inside the sheath 4, and the outer sides of the aluminum alloy inner conductors 1 are all provided with insulating layers 2, and the outer sides of the insulating layers 2 are all provided with shielding layers 3. The cable further comprises: a water-blocking layer 5 is coated on the outer side of the sheath 4, an expandable water-blocking tape 6 is evenly wrapped around the outer side of the sheath 4, and an outer sheath 7 is sleeved on the outer side of the expandable water-blocking tape 6. The water-blocking layer 5 is a polyethylene waterproof layer, and the outer sheath 7 is made of rubber.

[0031] When this embodiment is in use, a sheath 4 is wrapped around the periphery of multiple groups of aluminum alloy inner conductors 1 to form the main body of the aluminum alloy flexible cable, and an insulating layer 2 is coated on the outside of the multiple groups of aluminum alloy inner conductors 1, so that the aluminum alloy inner conductor 1 has good electrical insulation performance, and cooperates with the shielding layer 3 to prevent electromagnetic interference signal transmission, and then a water-blocking layer 5 is applied to the outside of the sheath 4, wherein the water-blocking layer 5 is a polyethylene waterproof layer, so as to perform preliminary waterproofing on the aluminum alloy conductor flexible cable, and further an expansion water-blocking tape 6 is wrapped around the periphery of the sheath 4 to provide peripheral coverage and protection for the sheath 4, so that when water vapor enters, the sheath 4 is expanded by the water vapor and the gap outside the sheath 4 is filled, thereby achieving a water-blocking effect, preventing water vapor from entering the sheath 4, and achieving a water-blocking protection effect to ensure the safety of the aluminum alloy flexible cable.

[0032] Example 2

[0033] This embodiment is different from the first embodiment. The polyurethane antifreeze sleeve 8 is used to provide antifreeze protection for the aluminum alloy flexible cable. Therefore, the following technical solutions are published. Please refer to the following for details. Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 The outer side of the outer sheath 7 is sleeved with a polyurethane antifreeze sleeve 8, and a connecting component is provided on one side of the polyurethane antifreeze sleeve 8. The connecting component includes a plug-in column 10 arranged at one end of the polyurethane antifreeze sleeve 8, and the plug-in column 10 corresponds to one end of the polyurethane antifreeze sleeve 8 and is provided with a docking groove 9. The width of the plug-in column 10 matches the width of the docking groove 9. An insulation groove 801 is provided on the polyurethane antifreeze sleeve 8, and the interior of the insulation groove 801 is filled with insulation cotton 804. The interior of the insulation groove 801 is evenly connected with a first support bar 802 and a second support bar 803. The first support bar 802 and the second support bar 803 are provided with multiple , the first support bar 802 and the second support bar 803 are interspersed and staggered with each other, the insulation groove 801 and the first support bar 802 form a mesh structure, the insulation groove 801 and the first support bar 802 are covered on the insulation cotton 804, and the top of the plug-in column 10 is provided with a telescopic cavity 1001 with a rectangular cross-section, and the interior of the telescopic cavity 1001 is connected to a compression spring 1002, and one end of the compression spring 1002 is connected to a locking column 1003, and the locking column 1003 is telescopically connected to the telescopic cavity 1001 through the compression spring 1002, and one end of the locking column 1003 passes through the locking hole 11, and the locking hole 11 is provided on the polyurethane antifreeze sleeve 8;

[0034] When using this embodiment, the plug-in column 10 is inserted into the docking groove 9. During this process, the locking column 1003 is suppressed and the compression spring 1002 is compressed. When the plug-in column 10 is fully plugged in, the compression spring 1002 is reset, and the locking column 1003 can be pushed through the locking hole 11, so as to ensure that the plug-in column 10 is firmly inserted into the docking groove 9 to ensure that the polyurethane antifreeze sleeve 8 is firmly sleeved on the outer sheath 7. The above-mentioned reverse operation can be performed to realize the disassembly of the polyurethane antifreeze sleeve 8, which is convenient to use, so that the polyurethane antifreeze sleeve 8 can be used to insulate and protect the aluminum alloy soft cable. Further, with the thermal insulation cotton 804 filled in the thermal insulation groove 801, the thermal insulation effect of the polyurethane antifreeze sleeve 8 can be enhanced, and the antifreeze effect is good, which can prevent the aluminum alloy cable from being frozen and help extend the service life of the cable.

[0035] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0036] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, i.e., they may be located in one location or distributed across multiple network units. Some or all of the modules may be selected based on actual needs to achieve the objectives of the present embodiment. Persons of ordinary skill in the art will be able to understand and implement the present invention without inventive effort.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A water-blocking aluminum alloy conductor flexible cable, comprising an aluminum alloy inner conductor (1), an insulating layer (2), and a sheath (4); a plurality of aluminum alloy inner conductors (1) are arranged inside the sheath (4); an insulating layer (2) is arranged on the outside of each of the aluminum alloy inner conductors (1); and a shielding layer (3) is arranged on the outside of each of the insulating layers (2); It is characterized by: Also includes: The outer side of the wrapping sleeve (4) is coated with a water-blocking layer (5), the outer side of the wrapping sleeve (4) is evenly wrapped with an expansion water-blocking tape (6), and the outer side of the expansion water-blocking tape (6) is sleeved with an outer sheath (7), and the outer side of the outer sheath (7) is sleeved with a polyurethane antifreeze sleeve (8), and a connecting component is provided on one side of the polyurethane antifreeze sleeve (8), and the connecting component includes a plug-in column (10) provided at one end of the polyurethane antifreeze sleeve (8), and one end of the polyurethane antifreeze sleeve (8) corresponding to the plug-in column (10) is provided with a docking groove (9), and the width of the plug-in column (10) matches the width of the docking groove (9).

2. The water-blocking aluminum alloy conductor flexible cable according to claim 1, characterized in that: The water-blocking layer (5) is a polyethylene waterproof layer, and the outer sheath (7) is made of rubber.

3. The water-blocking aluminum alloy conductor flexible cable according to claim 1, characterized in that: The polyurethane antifreeze sleeve (8) is provided with a heat preservation groove (801), and the interior of the heat preservation groove (801) is filled with heat preservation cotton (804), and the interior of the heat preservation groove (801) is evenly connected with a first support bar (802) and a second support bar (803).

4. The water-blocking aluminum alloy conductor flexible cable according to claim 3, characterized in that: A plurality of the first support bars (802) and the second support bars (803) are provided in the heat preservation tank (801), and the first support bars (802) and the second support bars (803) are interlaced and distributed.

5. The water-blocking aluminum alloy conductor flexible cable according to claim 3, characterized in that: The heat-insulating groove (801) and the first support bar (802) form a mesh structure, and the heat-insulating groove (801) and the first support bar (802) are covered on the heat-insulating cotton (804).

6. The water-blocking aluminum alloy conductor flexible cable according to claim 1, characterized in that: The top end of the plug-in column (10) is provided with a telescopic cavity (1001) with a rectangular cross section, and the interior of the telescopic cavity (1001) is connected to a compression spring (1002), and one end of the compression spring (1002) is connected to a locking column (1003).

7. The water-blocking aluminum alloy conductor flexible cable according to claim 6, characterized in that: The locking column (1003) is telescopically connected to the telescopic cavity (1001) via a compression spring (1002), one end of the locking column (1003) passes through the locking hole (11), and the locking hole (11) is provided on the polyurethane antifreeze sleeve (8).

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